Free unrestricted maps for Rocket R GT and TFC now online

[Penner]

I just assume i did it correct then, dont want to mess with the ecu more than necessary! i opened the unrestricted map in tuneecu and started reprogramming. No errors, starts and run just fine after. I did a short ride after, still have the decelpops but maybe thats normal even with unrestricted

Yes. No changes in this area.

 

[Wadejesu]

I just assume i did it correct then, dont want to mess with the ecu more than necessary! i opened the unrestricted map in tuneecu and started reprogramming. No errors, starts and run just fine after. I did a short ride after, still have the decelpops but maybe thats normal even with unrestricted

What exhaust are you running?

 

[pfos1]

I just assume i did it correct then, dont want to mess with the ecu more than necessary! i opened the unrestricted map in tuneecu and started reprogramming. No errors, starts and run just fine after. I did a short ride after, still have the decelpops but maybe thats normal even with unrestricted

I have the Comp Werks slip on and had a lot more decel pops before the DNK tune. Could hardly notice them at all with the stock muffler but they were plentiful and much louder with the very loud comp exhaust. They are not eliminated with my tune. Just reduced. Pulling in the clutch completely stops them. What happens in the combustion chamber when the clutch is engaged? Does the ecu do something to stop the pops that could be replicated with throttle closed during decel but without the clutch engaged (ie during engine braking)? It only pops with engine braking.

 

[dougl]

I had a PCIII on my RIII with a full Jardine exhaust and custom dyno tune. The popping on decel was explosive. Applying 10-20% trim in the zero throttle column of the PCIII fuel table from 1500-4500 eliminated the popping. You’ll see this approach a lot in videos on popping. The idea is that the mixture is lean and therefore hot enough for unburned fuel to ignite in the exhaust. Adding fuel reduces the temperature and prevents ignition in the exhaust.

 

[Tal]

Adding fuel reduces the temperature and prevents ignition in the exhaust.

Nailed it right there Mr!!!..good work...lots of guys dont understand this but that explains it spot on!

 

[dougl]

Does the new Rocket have secondary air injection? This would contribute to popping.

 

[estoma]

Does the new Rocket have secondary air injection? This would contribute to popping.

Yes, it does. TuneECU allows disabling SAI, but I am not convinced that it actually functions as intended on the new Rocket. We know already that TuneECU cannot raise the rev limit above 7000 rpm - not on mine anyway - and that it cannot clear all engine errors even if it reports the contrary.

Penner's tune has tamed the decel pop to a pleasant gargle, which I prefer to the absence of any. It suits the beast IMHO (-:

Here is a DynoJet FAQ discussion, confirming your experience adding fuel; Deceleration popping in the exhaust. This can be done incrementally, using TuneECU but would be best attempted during a dyno tune unless one wishes to load multiple tune iterations by thumbsucking values and range.

 

[dougl]

Yes, it does. TuneECU allows disabling SAI, but I am not convinced that it actually functions as intended on the new Rocket. We know already that TuneECU cannot raise the rev limit above 7000 rpm - not on mine anyway - and that it cannot clear all engine errors even if it reports the contrary.

Penner's tune has tamed the decel pop to a pleasant gargle, which I prefer to the absence of any. It suits the beast IMHO (-:

Here is a DynoJet FAQ discussion, confirming your experience adding fuel; Deceleration popping in the exhaust. This can be done incrementally, using TuneECU but would be best attempted during a dyno tune unless one wishes to load multiple tune iterations by thumbsucking values and range.

The F/L switch is at 4% TP so to tune out decel popping at 0%, you would have to add fuel to the L table in the MAP and RPM ranges where popping occurs. Penner didn’t change the L tables. I suppose you could simulate decel popping on a dyno. Is MAP constant at 0% TP or does it also vary with RPM? I would think the latter.

I’m surprised that sliding the bar to 7400 doesn’t actually raise the rev limit. This worked on the Windows version with the older Rockets.

SAI could be disabled by plugging the holes in the air box and head, if you can find them. It’s straightforward on the twins that have SAI.

I’m not sure about the O2 and SAI check boxes. For other models, I think unchecking the O2 box
suppresses the error codes if you disconnect the sensor but it doesn’t disable closed loop. I got this from a dyno tuner who saw no change in the A/F after unchecking the O2 box.

 

[pfos1]

Hello. I have a stock, comp werks and DNK Dyno run now complete. See below. Stock wheel HP/TQ 142/141. Exhaust only 152/147. Tune and exhaust 168/153. A final run flat out (not trying to match the stock fuel cutoff) produced 171.53/153.03. With the increased shaft drive loss and the very conservative Eddy Current/Brake style dyno this bike is making over 200hp/175lb/ft at the crank, surely. Glad to see my butt dyno was confirmed with the real thing.

 

[pfos1]

Yes, it does. TuneECU allows disabling SAI, but I am not convinced that it actually functions as intended on the new Rocket. We know already that TuneECU cannot raise the rev limit above 7000 rpm - not on mine anyway - and that it cannot clear all engine errors even if it reports the contrary.

Penner's tune has tamed the decel pop to a pleasant gargle, which I prefer to the absence of any. It suits the beast IMHO (-:

Here is a DynoJet FAQ discussion, confirming your experience adding fuel; Deceleration popping in the exhaust. This can be done incrementally, using TuneECU but would be best attempted during a dyno tune unless one wishes to load multiple tune iterations by thumbsucking values and range.

Can you elaborate on the rev limit? Mine says it’s raised to 7400 (DNK tune). I have not hit the rev limit yet but my recent dyno run seems the operator closes throttle below 7000 so I am not sure.